摘要:
A method for preparing a highly elastic biodegradable three-dimensional structure and a highly elastic biodegradable three-dimensional structure obtained thereby, particularly, a method for preparing a three-dimensional structure maintains mechanical properties even after three-dimensional printing, by adding a biocompatible heat stabilizer to poly(L-lactide-co-ε-caprolactone) and application of the three-dimensional structure to a scaffold for tissue engineering.
摘要:
A microorganism detection apparatus including a light source unit to irradiate light, a mirror chamber including a light inlet port and a light outlet port, through which the light is introduced and discharged, respectively an inlet port and an outlet port, through which particles are introduced and discharged, respectively, so that light emitted from the particles (emitted particle light) is generated by the light, and an opening, through which the emitted particle light is discharged outside. The mirror chamber has an oval longitudinal section, and is provided at an inside thereof with a mirror. A condensing optical system is disposed in front of the opening outside the opening to condense the emitted particle light discharged through the opening. Condensing efficiency of the fluorescent light condensing optical system is maximized.
摘要:
Provided are a system and method for providing a document based on a personal network. The document providing system may include a community searching unit to search for a community associated with a first document prepared by a first user, a document registration unit to register the first document in the searched community, and to receive a second document, associated with the first document, registered by a second user included in the community, and a document providing unit to provide the second document associated with the first document. According to embodiments of the present invention, a response that the first user may desire may be provided by receiving a response, registered by the second user included in the community associated with the first user, with respect to the document prepared by the first user.
摘要:
Disclosed are a transistor and a method for fabricating the same capable of increasing a threshold voltage and a driving current of the transistor. The method includes the steps of forming a first etch mask on a silicon substrate, forming a trench by etching the exposed isolation area, forming a first insulation layer in the trench and the first etch mask, forming a second insulation layer on the first insulation layer, removing the second insulation layer and the first insulation layer until the first etch mask is exposed, forming a trench type isolation layer on the isolation area, forming a second etch mask on an entire surface of the silicon substrate, etching the exposed channel area, performing an etching process with respect to a resultant substrate structure, and forming a gate in the recess.
摘要:
The present invention relates to a highly resilient (lactide/glycolide)/ε-caprolactone copolymer with good shape recovery force, flexibility, and biodegradability and a use of such copolymer for the repair of articular cartilage defects. The highly resilient (lactide/glycolide)/ε-caprolactone copolymer of the present invention is capable of rapidly and efficiently inducing cartilage regeneration, can be easily deformed and almost completely restored to its original form after deformation. Further, the highly resilient copolymer of the present invention can be safely and conveniently transplanted to a patient by using an arthroscope without causing economic, physical, and mental burden. Thus, the highly resilient copolymer of the present invention can be effectively used as a polymer scaffold for the repair of cartilage defects.
摘要:
Disclosed herein are a tube-type porous scaffold having a double-layered structure for use as an artificial vascular graft and a preparation method thereof. The method comprises (1) dissolving a biodegradable polymer in an organic solvent and mixing the polymer with a porogen so as to provide a polymer/porogen mixture; (2) coating a cylindrical shaft with the polymer/porogen mixture so as to form an inner porous coating layer; (3) preparing a biodegradable polymer gel by dissolving a biodegradable polymer in an organic solvent; (4) spinning down the biodegradable polymer gel in a non-solvent coagulation bath in which the cylindrical shaft having the inner porous coating layer, obtained at step (2), is immersed and rotated to form gel-phase fibers and allowing the gel-phase fibers to wind around the inner porous coating layer of the rotating shaft so as to form an outer polymer fibrous layer; and (5) separating the double-layered porous scaffold, formed on the shaft, from the shaft and removing the organic solvent and the porogen from the scaffold. Since the porous scaffold has a double-layered structure consisting of an inner porous coating layer containing micropores and a gel-phase outer polymer fibrous layer, it has high pore interconnectivity and mechanical strength, which effectively prevents the leakage of blood, and has high cell seeding and proliferation efficiencies, thereby being useful as a tissue-engineered artificial vascular graft.
摘要:
A system and method for providing a search result based on a personal network are disclosed. The search result providing system may include a search term reception unit, a personal network extraction unit, and a search result providing unit which may receive a search term from a user. The personal network extraction unit may extract at least one of a personal network associated with the search term, and a personal network associated with the user. The search result providing unit may provide documents associated with the personal networks as a search result of the search term. A search result optimized for the user may be provided to the user by searching for information corresponding to the search term from communities joined by another user having similar interests to that of the user, or communities joined by the user, based on personal networks of the user.
摘要:
A crane spreader for use in lifting a container includes an attachment unit, a head block, a frame unit, a position adjustment unit and a fixation unit. The attachment unit detachably attaches the crane spreader to an upper surface of the container. The head block has a pulley connected to a trolley of a crane through a cable and coupled to the attachment unit to restrict a horizontal movement the attachment unit with respect to the head block. The frame unit is supported by the head block to be horizontally movable with respect to the head block, the frame unit being disposed below the head block with a gap therebetween. The position adjustment unit aligns the frame unit with the container by displacing the frame unit with respect to the attachment unit. The fixation unit engages the container with the frame unit.